TW201810871A - Stator winding insulation structure - Google Patents

Abstract

A stator winding insulation structure is provided in the present invention. The stator winding insulation structure is set at a stator which includes a plurality of stator arms. In the stator winding insulation structure, at least one of a plurality of step structures of a first frame is extended from a first turning side which is adjacent to an arm body to a second turning side which is far from the arm body. A first distance between the first turning side and a center axis is smaller than a second distance between the second turning side and the center axis. At least one of a plurality of step structures of a second frame is extended from a third turning side which is adjacent to another arm body to a forth turning side which is far from the another arm body. A third distance between the third turning side and the center axis is smaller than a forth distance between the forth turning side and the center axis. A connection frame is connected to a first and a second insulation frame and the first and the second frame.

Description

Stator winding insulation structure

The present invention relates to a stator winding insulation structure, and more particularly to a stator winding insulation structure disposed on a motor stator and including a stepped structure.

For a long time, induction motors such as motors are the mainstream of rotating electric machines. They have long been favored by practicality and sturdiness. They play a very important role in the manufacturing industry or the civilian production industry, making people's life and rotation. The motor is inseparable. The motor is a device that can effectively convert electrical energy into mechanical energy. In recent centuries, the motor industry has developed rapidly. The generators in the power plant, as small as the vibration motors in the mobile phone, are the products of the motor industry. The principle that a motor can convert electrical energy into mechanical energy is based on Ampere's law in Maxwell's equations. The coil that introduces current will form an electromagnet due to the corresponding magnetic field generated by Ampere's law, and the electromagnet will continuously rotate in a fixed magnetic field. To convert electrical energy into kinetic energy.

In terms of structure, the winding inside the motor plays a vital role, and in order to effectively increase the power, a very large number of lines are set. Circle, however, since a motor usually has a plurality of teeth inside, and the coil is wound around each tooth, it is necessary to maintain electrical insulation between the coils so that there is no short circuit, and the relative limitation is The number of turns of the coil to avoid short-circuiting the coil and causing a reduction in power, and even causing the wire to escape due to motor failure.

Please refer to the first figure and the first A figure. The first figure shows a schematic cross-sectional view of the prior art motor stator, and the first A figure shows a partial enlarged view of the first figure. As shown, a motor stator PA100 includes a plurality of stator teeth PA1 (only one is shown), a plurality of insulating structures PA2 such as insulated slot paper (only one is shown), and a plurality of windings PA3 (only Mark one). Each of the stator teeth PA1 has a tooth body PA11 and a toothed shoe PA12, and the stator teeth PA1 are coupled to each other to form a winding space PA200 between the tooth body PA11 and the toothed shoe PA12. While splicing the plurality of stator teeth PA1, in the insulating structure PA2 between the two adjacent tooth bodies PA11 and the toothed shoes PA12, the windings PA3 are prevented from directly contacting the tooth body PA11 and the toothed shoes PA12.

It can be seen from the first figure that in the conventional insulating structure PA2, the angle B between the toothed shoe PA12 and the tooth body PA11 is not limited to 90 degrees, so that the winding PA3 is wound around the toothed shoe PA12 and the tooth body. When the PA 11 is on, it is easy to cause sliding along the sliding directions L1 and L2, which makes the wiring difficult.

Please refer to the second figure, which shows a schematic cross-sectional view of another motor stator of the prior art. As shown in the figure, in order to solve the above problems, the prior art proposes that the insulating structure PA2a is designed as an angled structure of 90 degrees at the joint portion of the toothed shoe PA12a of the stator tooth PA1a and the tooth body PA11a, but this structure causes winding. Reduction of PA3a reduces motor operation The power density, therefore, the prior art still has room for improvement.

In view of the existing insulation structure, the problem that the amount of winding is reduced and the power density is lowered is generally caused. Accordingly, the present invention mainly provides a stator winding insulation structure, which is mainly provided with a stepped structure to increase the amount of winding to solve the problems of the prior art.

Based on the above object, the main technical means adopted by the present invention is to provide a stator winding insulation structure, which is disposed on a motor stator. The motor stator has a central axis and is composed of a plurality of stator teeth, each of which includes a tooth. And a tooth body having a first body side and a second body side, the tooth shoe extending from the tooth body and having a first toothed shoe side and a second toothed shoe side.

The stator winding insulation structure comprises a first insulation frame body, a second insulation frame body, a first frame body, a second frame body and a connecting frame body. The first insulating frame is attached to the first body side, and the second insulating frame is attached to the second body side. The first system extends from the first insulating frame body and is attached to the first toothed shoe side of the toothed shoe. The first frame body comprises a plurality of first stepped structures, and at least one of the first stepped structures is Extending from a first turning edge adjacent to the tooth body to a second turning edge away from the tooth body, a first distance between the first turning edge and the central axis is smaller than between the second turning edge and the central axis a second distance. The second system extends from the second insulating frame body and is coupled to the first frame body and is attached to the second toothed shoe side. The second frame body includes a plurality of second stepped structures, and the second At least one of the stepped structures extends from a third turning edge adjacent to the tooth body to a fourth turning edge away from the tooth body, and a third distance between the third turning edge and the central axis is less than the fourth The fourth distance between the turning edge and the center axis. The connecting frame system is coupled to the first insulating frame body and the second insulating frame body. The first insulating frame body, the second insulating frame body, the first frame body, the second frame body and the connecting frame system are configured to wind a plurality of windings.

Based on the above-mentioned necessary technical means, the above-mentioned stator winding insulation structure further includes the following preferred technical means. The first turning edge and the second turning edge are separated by a first extending distance, and the third turning edge and the fourth turning edge are separated by a second extending distance, and the first extending distance and the second extending distance are both greater than the radius of the windings. At least one of the first stepped structures extends horizontally from the first turning edge to the second turning edge, and at least one of the second stepped structures extends horizontally from the third turning edge to the fourth turning edge. Additionally, at least one of the first stepped structures includes a first stepped structure that is furthest from the tooth body, and at least one of the second stepped structures includes a second step that is furthest from the tooth body of the other stator tooth structure. In addition, the first insulating frame body, the second insulating frame body, the first frame body and the second frame body are made of one of a paper and a plastic.

After adopting the main technical means of the stator winding insulation structure provided by the present invention, since the stepped structure can effectively increase the amount of winding, the power density can be effectively improved to solve the problems of the prior art.

The specific embodiments of the present invention will be further described by the following examples and drawings.

PA100‧‧‧Motor Stator

PA200‧‧‧ Winding space

PA1‧‧‧ stator teeth

PA11, PA11a‧‧‧ tooth body

PA12, PA12a‧‧‧ tooth boots

PA2, PA2a‧‧‧ insulation structure

PA3, PA3a‧‧‧ winding

1‧‧‧ Stator winding insulation structure

11‧‧‧First insulation frame body

12‧‧‧Second insulation frame body

13‧‧‧First body

131‧‧‧First step structure

1311‧‧‧First turning edge

1312‧‧‧second turning edge

14‧‧‧Second body

141‧‧‧ second step structure

1411‧‧‧ third turning edge

1412‧‧‧4th turning edge

15‧‧‧Connection frame

2‧‧‧Motor stator

21‧‧‧ Stator teeth

211‧‧‧ tooth body

2111‧‧‧First body side

2112‧‧‧Second body side

212‧‧‧ tooth boots

2121‧‧‧First toothed shoe side

2122‧‧‧Second toothed shoe side

3‧‧‧ Winding

P‧‧‧ central axis

R1‧‧‧ first distance

R2‧‧‧Second distance

R3‧‧‧ third distance

R4‧‧‧ fourth distance

T1‧‧‧first extension distance

T2‧‧‧second extension distance

R‧‧‧ Radius

L1, L2‧‧‧ sliding direction

The first figure shows a schematic cross-sectional view of a prior art motor stator.

The first A diagram shows a partial enlarged view of the first figure.

The second figure shows a schematic cross-sectional view of another motor stator of the prior art.

The third figure shows a view of the stator winding insulation structure of the preferred embodiment of the present invention disposed above the motor stator.

The fourth figure shows a schematic cross-sectional view of a stator winding insulation structure of a preferred embodiment of the present invention disposed on a motor stator.

The fifth figure shows a schematic view of the structure of the tooth body.

The fifth A diagram shows a partial enlarged view of the first step structure and the second step structure of the fourth figure.

Figure 6 is a cross-sectional view showing the stator winding insulation structure of the preferred embodiment of the present invention disposed on the motor stator and wound around the winding.

The seventh figure shows a schematic view of the winding of the tooth body.

The seventh A diagram shows a partial enlarged view of the first step structure and the second step structure of the fifth figure.

In the manufacturing method of the rotor structure provided by the present invention, the combined embodiments thereof are numerous, and therefore will not be further described herein, and only a preferred embodiment will be specifically described.

Please refer to FIG. 3 to FIG. 7A together. The third figure shows that the stator winding insulation structure of the preferred embodiment of the present invention is disposed on the motor stator. The top view, the fourth figure shows a schematic cross-sectional view of the stator winding insulation structure of the preferred embodiment of the present invention, the fifth figure shows the structure of the tooth body, and the fifth figure shows the fourth figure. A partial enlarged view of the first stepped structure and the second stepped structure, and the sixth figure shows a schematic cross-sectional view of the stator winding insulation structure of the preferred embodiment of the present invention disposed on the motor stator and wound around the winding, and the seventh figure shows the tooth A schematic diagram of the winding of the body winding, and the seventh drawing shows a partial enlarged view of the first step structure and the second step structure of the fifth figure.

As shown, the stator winding insulation structure 1 (shown in the fourth figure) provided in the preferred embodiment of the present invention is disposed on a motor stator 2 having a central axis P and a plurality of stator teeth. 21 (only one is shown in the figure), each stator tooth 21 includes a tooth body 211 and a toothed shoe 212. The tooth body 211 has a first body side 2111 and a second body side 2112. The toothed shoe 212 is self-aligned. The body 211 extends out and has a first toothed shoe side 2121 and a second toothed shoe side 2122.

The stator winding insulation structure 1 includes a first insulation frame body 11 , a second insulation frame body 12 , a first frame body 13 , a second frame body 14 , and a connection frame body 15 . The first insulating frame body 11 is attached to the first body side 2111 , and the second insulating frame body 12 is attached to the second body side 2112 .

The first frame body 13 extends from the first insulating frame body 11 and is attached to the first toothed shoe side 2121 of the toothed shoe 212. The first frame body 13 includes a plurality of first stepped structures 131 (three are shown in the figure) At least one of the first step structures 131 is from a first turning edge 1311 adjacent to the tooth body 211 (preferably adjacent to the first body of the tooth body 211) The body side 2111) extends horizontally to a second turning edge 1312 away from the tooth body 211 by a first extending distance T1. A first distance R1 between the first turning edge 1311 and the central axis P is smaller than the second turning edge. A second distance R2 between the 1312 and the central axis P (as shown in the fifth and seventh figures).

The second frame body 14 extends from the second insulating frame body 12 and is coupled to the first frame body 13 and is attached to the second toothed shoe side 2122. The second frame body 14 includes a plurality of second stepped structures 141 ( The figure shows three, only one is indicated, and at least one of the second step structures 141 is from a tooth body 211 adjacent to the stator teeth 21 (preferably adjacent to the second body side of the tooth body 211). The third turning edge 1411 of 2112) extends horizontally to a fourth turning edge 1412 away from the tooth body 211 of the stator tooth 21 by a second extending distance T2, and a third between the third turning edge 1411 and the central axis P. The distance R3 is less than a fourth distance R4 between the fourth turning edge 1412 and the central axis P (as shown in the fifth and seventh figures).

The connecting frame body 15 is coupled to the first insulating frame body 11 , the second insulating frame body 12 , the first frame body 13 and the second frame body 14 (other embodiments may only connect the first insulating frame body 11 and the second insulating frame The main body 12), and preferably, the connecting frame body 15 is integrally coupled to the first insulating frame body 11, the second insulating frame body 12, the first frame body 13, and the second frame body 14. The first insulating frame body 11, the second insulating frame body 12, the first frame body 13, the second frame body 14 and the connecting frame body 15 are provided for winding a plurality of windings 3 (only one is shown), and are wound around The radius r of the line 3 is smaller than the first extension distance T1 and the second extension distance T2.

In addition, it should be noted that the present invention is better. In the embodiment, the connecting frame body 15 of the stator winding insulation structure 1 spans the tooth body 211, that is, the stator winding insulation structure 1 is designed in accordance with each of the stator teeth 21.

In addition, although the first turning edge 1311 of the preferred embodiment of the present invention extends in a horizontally extending manner to the second turning edge 1312, the third turning edge 1411 extends horizontally to the fourth turning edge 1412, but other Embodiments may employ different extensions rather than only horizontal extensions (eg, non-linear extensions), and at least one of the first of the first step structures 131 includes a first stepped structure 131 that is furthest from the tooth body 211 (ie, a map) At least one of the second stepped structures 141 includes a second stepped structure 141 that is furthest from the tooth body 211 of the stator teeth 21 (ie, the second stepped structure indicated in the figure) .

It is to be noted that the first stepped structure 131 according to the preferred embodiment of the present invention is a stepped structure formed by the first turning edge 1311, the first extending distance T1 and the second turning edge 1312, and the second stepped structure 141 is a stepped structure composed of a third turning edge 1411, a second extending distance T2, and a fourth turning edge 1412, and is hereby described.

In summary, after the stator winding insulation structure provided by the preferred embodiment of the present invention is adopted, since the step structure can effectively increase the amount of winding, the power density can be effectively improved to solve the problems of the prior art.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. in contrast It is intended to cover various modifications and equivalent arrangements within the scope of the invention as claimed.

Claims (5)

A stator winding insulation structure is disposed on a motor stator. The motor stator has a central shaft and is composed of a plurality of stator teeth. Each stator tooth includes a tooth body and a toothed shoe. The tooth body has a first a main body side and a second body side extending from the tooth body and having a first toothed shoe side and a second toothed shoe side, the stator wire wound insulation structure comprising: a first insulating frame body Attached to the first body side; a second insulating frame body is attached to the second body side; a first frame extends from the first insulating frame body and is attached thereto a first toothed shoe side of the toothed shoe, the first frame body comprising a plurality of first stepped structures, at least one of the first stepped structures extending from a first turning edge adjacent to the tooth body a first distance away from the second turning edge of the tooth body, the first distance between the first turning edge and the central axis is less than a second distance between the second turning edge and the central axis; a second frame a body extending from the second insulating frame body and coupled to the first frame And attached to the second toothed shoe side, the second frame body comprises a plurality of second stepped structures, and at least one of the second stepped structures extends from a third turning edge adjacent to the tooth body To a fourth turning edge away from the tooth body, a third distance between the third turning edge and the central axis is less than a fourth distance between the fourth turning edge and the central axis; and a Connecting the frame body to the first insulating frame body and the second insulating frame The first insulating frame body, the second insulating frame body, the first frame body, the second frame body and the connecting frame system are configured to wind a plurality of windings. The stator winding insulation structure of claim 1, wherein the first turning edge and the second turning edge are separated by a first extending distance, and the third turning edge is spaced apart from the fourth turning edge. And extending the distance, the first extending distance and the second extending distance are both greater than the radius of the windings. The stator winding insulation structure of claim 1, wherein at least one of the first step structures extends horizontally from the first turning edge to the second turning edge, and the second stepped structure At least one of the horizontally extending the fourth turning edge from the third turning edge. The stator winding insulation structure of claim 1, wherein at least one of the first step structures comprises a first step structure farthest from the tooth body, and at least one of the second step structures One includes a second stepped structure that is furthest from the tooth body of the other stator tooth. The stator winding insulation structure according to claim 1, wherein the first insulation frame body, the second insulation frame body, the first frame body and the second frame body are made of a paper and a One of the plastics.